/*
 * Copyright (c) 2020 - present, Inspur Genersoft Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.inspur.edp.cef.generator.repository.adaptor.method;

import com.inspur.edp.caf.generator.baseInfo.ParameterInfo;
import com.inspur.edp.caf.generator.baseInfo.TypeInfo;
import com.inspur.edp.caf.generator.method.ClassMethodGenerator;
import com.inspur.edp.cef.entity.condition.FilterCondition;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.Modifier;
import org.eclipse.jdt.core.dom.ReturnStatement;

import java.util.ArrayList;

public class DefaultFilterGenerator extends ClassMethodGenerator
{
	private static final String ConditionVarName = "condition";
	private java.util.ArrayList<FilterCondition> filterConditions;
	public DefaultFilterGenerator(java.util.ArrayList<FilterCondition> filterConditions)
	{
		this.filterConditions = filterConditions;
	}

	@Override
	protected String getMethodName()
	{
		return "getDefaultFilterCondition";
	}

	@Override
	protected TypeInfo getReturnType()
	{
		TypeInfo typeInfo=new TypeInfo(ArrayList.class.getTypeName());
		typeInfo.setIsParameterizedType(true);
		typeInfo.getArguments().add(new TypeInfo(FilterCondition.class.getTypeName()));
		return typeInfo;
	}

	@Override
	protected ArrayList<Modifier.ModifierKeyword> getAccessModifiers()
	{
		return new java.util.ArrayList<Modifier.ModifierKeyword>(java.util.Arrays.asList(new Modifier.ModifierKeyword[] { Modifier.ModifierKeyword.PROTECTED_KEYWORD}));
	}

	@Override
	protected boolean getIsOverride() {
		return true;
	}

	@Override
	protected ArrayList<ParameterInfo> getParameterCollection()
	{
		return null;
	}

	@Override
	protected Block buildMethodBody()
	{
		Block block=ast.newBlock();
		if(filterConditions==null||filterConditions.size()==0)
		{
			buildReturnNullStatement(block);
		}
		else
		{
			buildReturnDefaultFilterStatement(block);
		}

		return  block;
//		if (filterConditions == null || filterConditions.size()<1)
//		{
//			return SyntaxFactory.Block(SyntaxFactory.<StatementSyntax>SingletonList(getReturnNullStatement()));
//		}
//
//		String conditionStr = FilterConverter.WriteFilterCondition(filterConditions);
//		java.util.ArrayList<StatementSyntax> statements = getFilterStatements(conditionStr);
//		return SyntaxFactory.Block(statements.toArray(new StatementSyntax[]{}));
	}

	private void buildReturnNullStatement(Block block) {
		ReturnStatement returnStatement=ast.newReturnStatement();
		returnStatement.setExpression(ast.newNullLiteral());
		block.statements().add(returnStatement);
	}

	private void buildReturnDefaultFilterStatement(Block block) {
	throw new RuntimeException("暂不支持DefaultFilter");

	}

//	private ReturnStatementSyntax getReturnNullStatement()
//	{
//		return MethodUtils.getReturnNullStatement();
//	}
//
//	private java.util.ArrayList<StatementSyntax> getFilterStatements(String filterCondition)
//	{
//		java.util.ArrayList<StatementSyntax> statements = new java.util.ArrayList<StatementSyntax>();
//		LocalDeclarationStatementSyntax conditionStatement = getConditionStatement(filterCondition);
//		statements.add(conditionStatement);
//
//		ReturnStatementSyntax serializeStatement = getSerializeStatement();
//		statements.add(serializeStatement);
//
//		return statements;
//	}
//
//	private LocalDeclarationStatementSyntax getConditionStatement(String filterCondition)
//	{
//		return SyntaxFactory.LocalDeclarationStatement(SyntaxFactory.VariableDeclaration(SyntaxFactory.IdentifierName("var")).WithVariables(SyntaxFactory.SingletonSeparatedList(SyntaxFactory.VariableDeclarator(SyntaxFactory.Identifier(ConditionVarName)).WithInitializer(SyntaxFactory.EqualsValueClause(SyntaxFactory.LiteralExpression(SyntaxKind.StringLiteralExpression, SyntaxFactory.Literal(filterCondition)))))));
//	}
//
//	private ReturnStatementSyntax getSerializeStatement()
//	{
//		return SyntaxFactory.ReturnStatement(SyntaxFactory.InvocationExpression(SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, TypeUtils.getTypeSyntax(FilterConverter.class), SyntaxFactory.IdentifierName("ReadFilterCondition"))).WithArgumentList(SyntaxFactory.ArgumentList(SyntaxFactory.SingletonSeparatedList(SyntaxFactory.Argument(SyntaxFactory.IdentifierName(ConditionVarName))))));
//	}
}
